Dandelion Doom Weed Killer Concentrate Refill

Name: Dandelion Doom Weed Killer Concentrate Refill
Rating: 3.7 (111 reviews)

$22

5 oz. concentrate bottle Covers up to 224 sq. ft.

111 Reviews

Dandelion Doom weed control concentrate 5 oz

Person applying Dandelion Doom Weed Control using Sunday pouch and sprayer

Mini bottle, major results

Iron-powered selective weed killer refill for your existing Dandelion Doom sprayer system. Controls weeds and moss without harming grass.

Free shipping! Ships in 1-2 business days

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Kill weeds with less waste

Refill your Dandelion Doom starter system for continuous weed control.

This concentrated iron-based formula is designed for your existing Sunday herbicide pouch and wand sprayer. The powerful iron (FeHEDTA) formula targets broadleaf weeds, moss, and lawn diseases while leaving your grass unharmed. It works quickly on dandelions, clover, chickweed, and many other common lawn weeds, offering a sustainable, cost-effective solution for ongoing weed management.

PRODUCT FEATURES

Lawn-safe weed killer concentrate refill
Kills broadleaf weeds, mosses, and algae in lawns
Suppresses select lawn diseases
Iron (FeHEDTA) nutrient formula
Fast acting—results within hours
Kills weeds down to the root
For use with Dandelion Doom starter kits
Treats up to 224 sq. ft.

WHAT'S INCLUDED

5 oz. bottle of iron chelated (FeHEDTA) concentrate weed killer. Designed as a refill for your existing Sunday Dandelion Doom starter kits.

INSTRUCTIONS

For best results, apply between 50-85 degrees F when no rain is expected for 3+ hours:

Pour one full bottle of Dandelion Doom into your reusable Sunday pouch and attach the sprayer
Use your outside hose to fill the pouch up to the 1-gallon mark
Secure the cap of the reusable pouch and shake well
Spray onto weeds in your lawn until leaves are entirely covered
Repeat treatment in 3-4 weeks for best results

Helpful Tips from Lawn Advisors:

How does this lawn-safe weed killer work?

Grass and weeds absorb iron differently. Weeds quickly take in too much iron, which becomes toxic and kills them. Grass absorbs iron more slowly and can tolerate higher amounts.

What weeds does Dandelion Doom control?

Effective against broadleaf weeds like black medic, plantain, thistle, chickweed, creeping buttercup, creeping charlie, dandelion, geranium sp., English daisy, false dandelion, healall, oxalis, speedwell sp/, knotweed, shepherd’s-purse, silverweed cinquefoil, white clover, wild chamomile, as well as moss, liverworts, algae and lichens.

It can also control or suppress lawn diseases: dollar spot, rust and/or snow mold.

Do I need the Dandelion Doom Starter Pack to use this product?

Yes, this is a refill concentrate only. You'll need the sprayer and pouch that come with the Dandelion Doom Starter Pack or Starter 2-Pack to apply this product.

How to use Dandelion Doom with other Sunday products?

You can apply Dandelion Doom before or after lawn fertilizer. Allow weed control products to dry completely before applying other liquid products or watering your lawn–the longer the weed control absorbs, the more effective the application.

Does Dandelion Doom stain?

Yes, it can cause staining due to high iron content. Avoid using on sidewalks or hard surfaces. If you accidentally spill, immediately spray and dilute the area. For best results, mix over grassy or landscaped areas.

Are there any US states where this is not approved for use?

This product is approved for use in all states.

Sunday Dandelion Doom Concentrate Label

Dandelion Doom Concentrate SDS

Dandelion Doom Concentrate herbicide application to dandelions in lawn

Dandelion Doom Concentrate Instructions

Ready to get to the root of your weed problem? Learn how to assemble your concentrate kit, how to apply it, and get best practices to control weeds in your lawn.

Read article

Customer reviews

3.7

111 Reviews, 43 Q&As

3.7

111 Reviews, 43 Q&As

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111 Reviews

Updating Results

07/17/25

Lori

06/29/25

Sunday Customer Service is Great

I used Dandelion Doom without success. I left a review and Sunday contacted me and worked though the issue with *and actual person*. They explained what may have happened and they sent me a different product to try after looking at pictures of the weeds in my lawn that I sent. Kudos for the advice and service!

Location:

Colorado Springs, CO

Becky

05/14/25

Wow… it killed them all!

This was my first time using dandelion doom. We are up in Bozeman MT with unpredictable weather right now but I made sure to choose the right day - sunny and warm with emerging, healthy dandelions (covering pretty much our entire lawn, they were out of control this year). So I took my time spraying each one, really saturating the leaves and flower...Read More

s. It took 3 bottles of dandelion doom and a good amount of time but I just slowly worked through. By the next day they were all withered and the next day they were completely brown and dead. I am so impressed at how well this worked. Will definitely follow up in 4 weeks and hopefully get control of the dandelions over time. Read Less

Location:

Bozeman, MT

Anonymous

04/01/25

Neighbors were impressed

My neighbor was skeptical of my pet friendly weed treatment but Dandelion Doom proved him wrong!

Ann C.

06/29/24

White clover taking over

I couldn't be happier with the Dandelion Doom Concentrate. It was much easier to use than the smaller spray bottle of the same product esp in large applications. My entire yard was being taken over clover. You could see it start working within hours after applying. Now with the rain here in the PNW i would suggest 2 applications of the product. Im...Read More

loving the results. Read Less

Location:

Yelm, WA

Jeff

06/03/24

Skepticism erased!

I applied it with no rain in forecast. However, the following morning it was evident that a light rain fell overnight (darn! would it inhibit the Dandelion Doom?). In the sunny afternoon I went to apply additional spray and to my surprise discovered dozens of nearly-black dandelions looking as if they'd been... bombed! Accurate name for the produc...Read More

t, thanks. Read Less

Location:

Cincinnati Ohio

Brian

09/02/21

Thistle Problem

We had a thistle problem in our yard this year, they were everywhere. Dandelion Doom killed every single one of them. It did take about two days for it to work, but once it did they died fast. I bought two more bottles for next year.

Location:

Sheboygan, WI

Francis

08/20/21

Dandelion Doom

Dandelion Doom was included in my first box. I didn’t need it for my lawn but used on my daughter’s lawn and it did an amazing job.

Location:

Colorado

F O.

08/19/21

This was the 1st SUNDAY

This was the 1st SUNDAY product I tried. I sprayed it on clusters of flat deep rooted weeds that had intertwined with the bermuda grass all over the yard. Almost immediately the weeds turned black. I tried to dig them out but the roots were so deep and broad it left holes in the ground. after a couple of hours of hard digging, pulling I left them....Read More

As they died out, over the next weeks, the grass started growing over them and covering them up! (I had applied the first lawn treatment by then). So now there's no trace of those huge clumps of flat weeds and all solid new grass growth -- it looks great and knowing I didn't use harmful herbicides feels great! Read Less

Location:

Milton, Georgia (Atlanta)

Sue N.

08/19/21

Quick and effective

Works quick and effectively. Just a squirt or two kills weed within the day. Better results than Roundup. Highly recommend.

Location:

Hudson, WI

Wendy

08/19/21

I love Dandelion Doom. I

I love Dandelion Doom. I love I'm not using poisons on my lawn. I watch dandelions turn a black ash color and then " gone , gone baby". It works even on my creeping Charlie weeds. I will say be careful and not spray it near drip line bushes, ex. Viburnum. It did destroy a branch of my viburnum. But I highly endorse this product.

Location:

Westchester, Illinois

Tish

08/19/21

Great product

The instructions were easy to follow and we love that this product is not toxic! Our lawn has never looked better! Thanks Sunday!

Location:

New Braunfels Texas

Jay

08/19/21

Works Great!

Brandon S.

08/04/21

Kills dandelions fast

Works great at killing weeds but not your grass. Typically, I start to see results within a few minutes. Unlike the chemicals that other weed killers use, Dandelion Doom kills the dandelions without the harsh chemicals.

Location:

Shelbyville, Indiana

Diane

08/03/21

It killed in the weeds

It killed in the weeds in no time.

Location:

Toms River,New Jersey

William

07/23/21

Great Products!!

My lawn looks great!!

Deb

07/17/21

Love this I have a

Love this I have a dog and I don’t want anything to hurt her

Location:

Utah

Steev

07/14/21

Doom? Should be the dandelion

Doom? Should be the dandelion assassins. Maybe devastation. This stuff works. Hands down. It’s like Thor’s hammer coming down on the dandelions in your yard. Get it. Now.

Location:

Canton, CT

Kenneth H.

07/14/21

Works as described

Worked great! I applied to a patch of clover and broad leaf undesirables and within a day, they were wilted. The following day the undesirables had turned black. The grass looks fine. I got out my phone and ordered enough to treat the rest of my yard.

Location:

Fairmont, WV

Fabio

07/14/21

Works well.

Douglas

07/14/21

Works great. Weeds were shriveled

Works great. Weeds were shriveled and dead in one day and were taken care of in one application

Location:

Pawleys Island, SC

Christian

07/14/21

It Works!

Dandelion Doom did exactly what it was supposed to. Hooray for that!

Location:

Wilmington, North Carolina

Michael D.

07/13/21

Seems to be working great

Seems to be working great after one application!

Location:

Phoenix, Arizona

Stephen

07/13/21

Dandelions Gone!

This product works incredibly well: results in hours! And you won’t see dandelions back on your lawn after using it regularly.

Location:

Belleville, IL

Don

07/13/21

Dandedeath

Every plant I sprayed with the enriched iron solution turned black and died.

Location:

Indianapolis, IN.

Terry

07/07/21

I only had two dandelions,worked

I only had two dandelions,worked well.

Robert F.

07/13/25

Q: best way to kill spurweed.

Store Owner

07/15/25

A: This is a great case for our expert Yard Advisor team! You can reach them at [email protected] or by calling 415-903-6932.

Mary A.

06/29/25

Q: I have several weeds in my lawn, some dandelions, some creeping Charlie, clover, and others that I don’t even know what they are. I’m not sure what to do. Do you have a weed killer that I could attached to my hose and one that will kill all those weeds that I mentioned. I’m at a loss as to what to do. It’s a project. They have to tackle myself, which is not easy for a 79-year-old woman. Please let me know if you have any suggestions. Thank you

Store Owner

06/30/25

A: Hi Mary, at this time our hose-end weed control product is out of stock. We recommend connecting with our expert Yard Advisor team; they can take a look at your weed situation and help make recommendations. You can reach them at [email protected] or by calling 415-903-6932.

Sean

05/07/25

Q: Is this safe for use in yards with a private well?

Store Owner

05/08/25

A: Yes, our products are can be used by homes with well water. For extra caution, you can maintain a 10-15 foot buffer between treated areas and your well water.

Alli

05/04/25

Q: will this kill buckhorn plantain weeds

Store Owner

05/04/25

A: Yes, both of our weed control options are effective on buckhorn plantain weeds.

Courtney

05/04/25

Q: Is this safe around dogs

Store Owner

05/04/25

A: Great question! We designed Sunday with safety in mind, so we are extremely selective about not only the ingredients we use but also the lawn and garden techniques we recommend. Our ingredients break down quickly and don’t persist in the environment. After our products dry, you can get back to playing outside right away.

Jeff

04/25/25

Q: Will this product kill clover

Store Owner

04/26/25

A: Yes, Dandelion Doom should be effective on the clover in your lawn.

Les H.

04/10/25

Q: How well does this product kill dollar weed?

Store Owner

04/10/25

A: Unfortunately, we don’t offer a weed control product effective on dollarweed. But, our team is always working on new products with ingredients that meet our standards, so stay tuned! If you're interested in connecting with a Yard Advisor regarding your weeds, you can always reach them at [email protected] or by calling 415-903-6932.

Kenn O.

03/24/25

Q: do i need weed control where I live

Store Owner

03/25/25

A: Most regions of the nation do indeed experience weeds of some sort; the weed species and severity can vary based on your region and current state of your lawn. For personalized assistance, we recommend reaching out to our Yard Advisors; they can take a look at your lawn and make recommendations for you!

Erick

01/29/25

Q: How long after I apply dandelion doom do I have to wait before I lay down grass seed?

01/30/25

A: Great question! We recommend waiting at least 24 hours after weed control before laying your grass seed.

palma

11/01/24

Q: Can any of your products kill goutweed from the root?

11/01/24

A: Weed Warrior will be the best option for you: https://www.getsunday.com/shop/lawn-care/weed-warrior-herbicide-concentrate-starter-2-pack

dale m.

08/16/24

Q: will this hurt pine trees and other plants in my yard

08/19/24

A: Dandelion Doom is an effective weed control option on plants like Dandelions and other broadleaf weeds. We do not recommend applying it to any broadleaf plants that you wish to keep.

Don

07/25/24

Q: Omri approved?

07/26/24

A: Dandelion Doom is not OMRI listed. Organic growing practices have inspired Sunday from day one, and many of our ingredients are the same ones used by organic farmers and groundskeepers.

For a weed control option that is OMRI listed, we encourage to to check out Weed Warrior: https://www.getsunday.com/shop/lawn-care/weed-warrior

Robin M.

07/24/24

Q: Does this control spotted spurge?

07/26/24

A: Yes, Dandelion Doom should help with your spotted spurge. Mature weeds may require multiple applications.

Sam

07/09/24

Q: Will this work on morning glory?

07/09/24

A: Yes, Dandelion Doom should help! More mature weeds may require multiple applications.

Sharon

07/07/24

Q: Do you have a product that will eliminate dallisgrass? Safety is not a concern.

07/08/24

A: Unfortunately, we don’t offer a weed control product effective on dallisgrass. But, our team is always working on new products with ingredients that meet our standards, so stay tuned! If you're interested in connecting with a Yard Advisor regarding your weeds, you can always reach them here: https://www.getsunday.com/help-center?a=Contact-Customer-Service---id--QtSDAj-sRAulw9HUjz4osg

Seth

07/06/24

Q: How long till it is safe for pets to go back into the yard?

07/08/24

A: We designed Sunday with safety in mind, so we are extremely selective about not only the ingredients we use but also the lawn and garden techniques we recommend. Our ingredients break down quickly and don’t persist in the environment. After our products dry, you can get back to playing outside right away.

Chandra B.

06/06/24

Q: Is this harmful if you have a well on property and have well water?

06/10/24

A: Sunday is a precision fertilization program, focused on giving your lawn nutrients when it needs them.

Our products are foliar-fed meaning the grass can absorb nutrients immediately, effectively, with lower chance of runoff. When used as directed, Sunday shouldn't affect your well water at all.

gia

06/01/24

Q: Will this kill the lawn too?

06/03/24

A: Dandelion Doom will not harm the grass in your lawn, it is designed to target broadleaf weeds only!

Michaela

06/01/24

Q: Is this safe to use in vegetable garden? We have Canadian thistle taking over the vegetable garden.

06/03/24

A: You can use our weed control in garden beds, but we recommend not applying to any desired plants to avoid risk of damaging the plants.

Jason

05/28/24

Q: Do you offer this in a bigger bottle? Looking to spray about an acre.

05/29/24

A: At this time we don't offer this in a larger option, but we will be sure to announce if this is something we can offer in the future!

05/27/24

Q: Can I use Dandelion Doom in the summer when the temperatures are already above 90?

05/29/24

A: For best results, we recommend applying Dandelion Doom spring through fall when outdoor temps are between 50–85º F, and weeds are actively growing.

Mari

05/19/24

Q: We just used your fertilizer for southern lawns and it's working great. Dollar weed is being pushed out but we need a weed and feed next, correct? Please help me understand which one is for lawns. Thanks, Mari

05/20/24

A: Sunday nutrients will improve soil health, encouraging thicker and fuller grass growth. However, our fertilizer pouches/bags do not contain any herbicides, so they alone will not directly treat existing patches of weeds.

To help with those pesky weeds, we offer a variety of weed control products. They can be added in a recurring fashion (as part of our plan bundles), or as an add-on from our Shop here: https://www.getsunday.com/shop/category/lawn-care/weed-killer